Used car guide

2011 Hyundai I800: common problems and what to check

What gets flagged at MOT on 2011 Hyundai I800s, from 478 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 478 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

478MOT tests in 2025
54%pass first time (all 2011 cars: 61%)
7,700typical miles a year
4.2×the usual rate for anti-roll bar link joints

What stands out

Parts flagged at MOT more often on 2011 Hyundai I800s than on all cars registered in 2011.

  • Anti-roll bar link joints4.2× usual
    Hyundai I800
    15.9% All 2011 cars
    3.8%

    Failed outright at MOT: 5%, against 1.4% of all 2011 cars. The rest were advisories or minor defects.

    Rough price £60–£150 (one joint) ClickMechanic

    At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

  • Rigid brake pipes2.6× usual
    Hyundai I800
    16.1% All 2011 cars
    6.1%

    Failed outright at MOT: 2.7%, against 1% of all 2011 cars. The rest were advisories or minor defects.

    Rough price £100–£400 our estimate

    At the viewing: Ask to see underneath, or check the MOT advisories: corroded brake or fuel pipes get worse every year and fail the MOT when they do.

  • Engine oil leaks2.1× usual
    Hyundai I800
    19% All 2011 cars
    8.9%

    Failed outright at MOT: 0.8%, against 0.2% of all 2011 cars. The rest were advisories or minor defects.

    Rough price £80–£600 our estimate

    At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

  • Braking performance2.8× usual
    Hyundai I800
    14.9% All 2011 cars
    5.4%

    Failed outright at MOT: 7.3%, against 2.1% of all 2011 cars. The rest were advisories or minor defects.

    Rough price £100–£350 our estimate

    At the viewing: On a quiet road, brake firmly from about 30mph. The car should stop straight without pulling.

By area

The share of 2011 Hyundai I800 MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    47% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Brakes
    46% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Lights and electrics
    38% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Tyres
    29% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Oil and fluid leaks
    20% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

  • Wipers, windscreen and mirrors
    10% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

Looking at a Hyundai I800?

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Other years

YearMOT testsMost flagged
20191,829Lights and electrics 27%
20181,181Lights and electrics 32%
20171,326Lights and electrics 37%
20161,017Lights and electrics 42%
2015153Brakes 43%
2014150Brakes 45%
2013199Brakes 42%
2012904Brakes 49%
2010380Brakes 49%
2009142Lights and electrics 58%
2008100Suspension 48%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2011 Hyundai I800s registered in 2011. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score